Overview
The LM7171BIN is a high-speed voltage-feedback amplifier produced by Texas Instruments (originally from National Semiconductor). This amplifier combines the slewing characteristics of a current-feedback amplifier with the ease of use of a traditional voltage-feedback amplifier. It is designed for high-speed and high-output current applications, making it suitable for various video and signal processing tasks.
The device is stable for gains as low as +2 or −1 and operates on ±15V or ±5V power supplies, allowing for large signal swings and a greater dynamic range. It features a very high slew rate of 4100V/μs and a wide unity-gain bandwidth of 200MHz, while consuming only 6.5mA of supply current.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | TA = –40°C to +85°C | 0.2 | 1 | 3 | mV |
| Input Bias Current (IB) | TA = –40°C to +85°C | 2.7 | 10 | 12 | μA |
| Input Offset Current (IOS) | TA = –40°C to +85°C | 0.1 | 4 | 6 | μA |
| Common-Mode Rejection Ratio (CMRR) | VCM = ±10V, TA = –40°C to +85°C | 75 | 105 | dB | |
| Power Supply Rejection Ratio (PSRR) | VS = ±15V, TA = –40°C to +85°C | 80 | 90 | dB | |
| Slew Rate (SR) | AV = +2, VIN = 13VPP | 4100 | V/μs | ||
| Unity-Gain Bandwidth | 200 | MHz | |||
| Output Current | Sourcing, RL = 100Ω | 100 | mA | ||
| Supply Current (IS) | TA = –40°C to +85°C | 6.2 | 8 | 9.5 | mA |
Key Features
- Very high slew rate: 4100V/μs
- Wide unity-gain bandwidth: 200MHz
- Low supply current: 6.5mA
- High open-loop gain: 85dB
- High output current: 100mA
- Differential gain and phase: 0.01%, 0.02º
- Specified for ±15V and ±5V operation
- Low SFDR and THD, suitable for ADC/DAC systems
Applications
- HDSL and ADSL drivers
- Multimedia broadcast systems
- Professional video cameras
- Video amplifiers
- Copiers, scanners, fax machines
- HDTV amplifiers
- Pulse amplifiers and peak detectors
- CATV and fiber optics signal processing
Q & A
- What is the slew rate of the LM7171BIN?
The slew rate of the LM7171BIN is 4100V/μs at AV = +2, VIN = 13VPP.
- What is the unity-gain bandwidth of the LM7171BIN?
The unity-gain bandwidth of the LM7171BIN is 200MHz.
- What are the typical supply currents for the LM7171BIN?
The typical supply current for the LM7171BIN is 6.5mA.
- What is the maximum output current of the LM7171BIN?
The maximum output current of the LM7171BIN is 100mA.
- What are the operating voltage ranges for the LM7171BIN?
The LM7171BIN is specified for operation on ±15V and ±5V power supplies.
- What are some common applications of the LM7171BIN?
Common applications include HDSL and ADSL drivers, multimedia broadcast systems, professional video cameras, and CATV and fiber optics signal processing.
- What is the input offset voltage of the LM7171BIN?
The input offset voltage (VOS) of the LM7171BIN is typically 1mV, with a maximum of 3mV over the operating temperature range.
- What is the common-mode rejection ratio (CMRR) of the LM7171BIN?
The CMRR of the LM7171BIN is typically 105dB for VCM = ±10V.
- How does the LM7171BIN perform in terms of harmonic distortion?
The LM7171BIN has low second and third harmonic distortion, making it suitable for ADC/DAC systems. For example, at fIN = 10kHz, the second harmonic distortion is –123 dBc.
- What are the package options available for the LM7171BIN?
The LM7171BIN is available in SOIC (8-pin) and PDIP (8-pin) packages).
